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Hey all wondering what to do here have my 450x with a new jd kit wondering what jets and pins to use ? Clip position? I have the top of air box cut open and full 2 bros exhaust on the bike stock everything else that has to do with this valves are in spec etc just want to make it a one time thing pull apart and put together I was thinking 170 main with red pin at 4th clip pos p.s. I am at 2000ft elv and running normal summer temps

welcome to CRF's Only and congrats on your new ride. it's a great bike. the jd jetting kit has instructions and will answer these questions for you. do you have the jd jetting instructions?

Yes I have them but I don't seem to fall into the catagories
Main jet 165 sea level to 4000ft
170 jet for bike with open air box and exhaust system
And nothing for either of those options for the needle and or clip position
3000-6000 is closest with red clip@ 4th

So I would use 170 and red at what clip jd didn't give me a strait answer

i don't have the instructions with me currently so i can't speak to them specifically. however start with the recommendations nearest your situation and test and adjust from there.